Question

How do you write the expression of the phrase “8 minus the product of 9 and r”?

Answer 1

Hint: In order to write the expression we will use a linear equation with a variable. Here the variable is $r$. Now first we will design the term for products of 9 and r. then we will subtract it from 8. So the expression will have a constant term and other terms have a variable in it. Then just put minus signs in between.

Complete step by step solution:
From the given statement 8 minus the product of 9 and r first we will take 8.
Now the product of $9$ and $r$ is given by \[9r\].
Now the phrase will be written as an expression \[8 - 9r\].
This is our answer.
Note that we will subtract the second term from the first. That is, 8 will come first and \[9r\] will be the second term. Product of 9 and r is nothing but 9 is multiplied with r, but we do not mention the sign of multiplication. When two numbers are written in that way \[ab\] that is they are multiplied with each other.
So, the correct answer is \[8 - 9r\].

Note: When we solve the expression we get the value of r. Equation with one variable is having one solution. Given above is the equation with one variable and it is a linear equation.